Szabolcs Szabo enhanced vector indexing capabilities in the ArcadeData/arcadedb repository by adding support for List<Float> types, expanding beyond the existing float[] indexing. This work involved careful algorithm design and data structure considerations in Java to ensure compatibility with current systems while enabling more flexible data modeling for vector-based analytics and machine learning queries. By addressing the need for broader numeric data handling, Szabolcs enabled developers to perform vector-based queries on list data without sacrificing performance or existing functionality. The focused, well-scoped change demonstrated disciplined engineering and contributed to the repository’s readiness for advanced ML-driven data workflows.